Operation CHARM: Car repair manuals for everyone.

For USA and Canada




COMPONENT PARTS

Engine Coolant Temperature Sensor






The engine coolant temperature (ECT) sensor is used to detect the engine coolant temperature. The sensor modifies a voltage signal from the ECM. The modified signal returns to the ECM as the engine coolant temperature input. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases.





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